Model for better merges / patches

[janpaul123]

There are a ton of models now that help apply merges / patches, e.g. https://openrouter.ai/morph/morph-v2

I haven't yet done an investigation of Cline/Roo or other tools.

[Triquetra]

Morph is my preferred apply model. But Relace is also a possibility. I've used both with continue.dev. Both were significantly faster and much cheaper than using Claude Sonnet.

[bhaktatejas922]

@janpaul123 @Triquetra #1428